Machine for forming hinge members on blanks.



. RCHTER.

MACHINE FOR FORMING HINGE MEMBERS 0N BLANES.

APPLICATION PLED APR.17,1913..

Patented May 19, 1914..

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RCHTER.

Hx MAGHNB lFOB. FORMING HINGE MEMBERS 0N BLANES,

APPLTGATUN FILED A131117, 1913.

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F: RICHTER. MAGHNE FOR FORMING HINGE MEMBERS 0N BLANKS.

I APPLICATXON FILED PRU, 1913. ,1 7%,8551 Patented May 19, 1914.

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H. P. RICHTER,

MACHINE FOR FORMING HINGE MEMBERS ON BLANKS.

APPLIGATON FILED APR.L7, 1913.

Patented May 19, 1914.

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MACHINE FOR FORMING HINGE MEMBERS 0N BLANES.

l APPLICATION FILED APR. 17. 1913. 1,096,863.

Eatnted May 9, 1914.

7 SHEETS-SHEET 6.

@wi/humo H.P.R1GHTBR. MACHINE FOR `ORMING HINGE MEMBERS ON BLANKS.

APPLICATION FILED APR.17. 1913.

Patented May 19, 1914.

'7 SHEETB-SHEET 7.

' andis of such a nature that said mechanism the blanks be interruptedltie Controlling Ainthe coninv of Forsyth and State of North `they maybe formed during the progress of and shortpieces sniiiciently long forpinztles -cnt therefrom.

.to the*machine and-bythe advancing' blank vHANS FRICHTER, OFWINSTON-SALEM,

NORTH CAROLINA, ASSIGNOR TO R. J'.

REYNOLDS TOBACCO COMPANY, OF WINSTON-SALEM, NOR-TH CAROLINA, A

CORPORATION OF NEW JERSEY.

v.'lllACElINE FOR FGRIVIING HINGE MEMBERS 0N BLANKS.

To (IU fav/10m it' ym f/y/ ronfmn 4 Be it known that I, Hansi?. RICHTER,having renounced my allegiance to the Emperor of GermanyT and dulydeclared my intention to' become a citizen of the. United States, and inthis sense a citizen of the United IStite.:7 residing at Huston-Salem,

Carolina, have invented` new and nsefnl Improyementsin Machines forForming Hinge Members on Blanks. of which the following isafspeciilcation. l i

This-invention relates to a machine for forming'hing'e members onsheets` of metal and aliixing the'pivots thereto, as for instaneesncharticles as tin containers or receptacles 'hayingpliinged covers whichare afterward secured to the pivot pins` l vOne -of` the objects of thepresent inven-v Ation Yis to provide-in snoh amat-hin@ a sinn ple,strong, and positively acting folding mechanism, by ineansof which aplurality of teeth or lugs cnt in one edge of asnect metal blank areturned over a short length of. wire that forms a hinge pintle, thepintle being cnt from a Continuons length of wire automatically fed intoposition. The sheets ofametal` on which the hinge members are formed mayhave the teeth or lugs cnt ythereon before placing them in the maehine,or

the blank tok the' folding mechanism.v Another object ofthe invention isto pro- Vide an automatic `Wire feeding' mechanism by means' of whicha'eontinnonsstrand of wire is intcnlnittently7 fed into themaehine -`A.further object of the intention is directed to means for controlling`the wire feeding mechanism bythe advancing blank,v

is operative only when; blanks are being fed nponwhieh a hinge'member isabont'to be formed. If, forv any reason. the feeding ot devicenot beingactuated the feedingl Amecha.nism` \iill/,' although continuing itsmovement. "fail to grip the Wire, and the latter will 'not pass intoposition fromv which a pintlemay be cnt. '4

. vW ith these and other objiee'ts in View'` the i :An i y Y, i

Specification of LettersjPatent.

Application tiled April 17', 1913.

Patented May i Q, i 'i rkt.- seran No. 761,836. Y

intention 'consists in the novel cmistrnction, combnnitlon.' andarrangement of parts hereinafter described in detail and pointed ont `m,the appended clanns're`ference being had to the accompanyingdrawings,in n'hich-.-

Figure.v l is ay front elevation of a power press with tlreinventionapplied thereto. the i parts being' shown'in initial position. 'Figi'.

2 is a side elevation ofthe. same. partlym" sec.tion."l*` ig. Bisavertical sectional View on the line 3 3, Fig. l, showing' a means .forcutting teeth or lugs upon the blank.l .Figa 4' is an' enlarged`vertical sectional View on the line 4f-l.`-lig. LshoWing the meehanismfor folding' the teeth or lugs ahont the pintle. Fi.- lis ya reareleiation of the parts illnstratcd in Fighe on the same scale. Figs. vGand T are views similar to Fie'. Li. the parts ,being shown in-(,lilf'erentpositions.` Fig'. 8 is a `ln'irizfontal seetional'yiew onthe line 94S. Fig. l.. Figs; 9 and l0 are Verti- Acal sectional' viewson,the line El-SL Fig. S,

showing particularly the .Wire feed control mechanism.' Fig. ll is ar-vertical sectional rien' on. the line ll-ll, Fig'. l. Figs. l2 and 123are views illustrating a modified form of ivire feed control mechanism.designed to be nsedwhen blanks with previonsly formed teeth or lugs arefed to the machine. Fig. 'll is a plan` View of a blank as it appearswhen fed to the press. Fig. l5 is a partial vien' of same yas'it appearsafter the teeth or lugs are cnton one edge thereof. Fig.

1G is a View `showing` the lugs partly folded about a hingepintle. Fig.17 isa cross seetional Anienv ofthe same on the line 1'7-17.

Fig. T18 is a View showing the completel fold- -plurality of teethorlugs areto be formed,

lSaid I.lugs being' separated from each other and Ithe adjacent edgesot' the blank by spaces'all, as in :Figa 15. In Figs. 16 and 17 appintleer1 hi'ngepin o is shown in 'place and seated in a Crimp or Vdepressiona. in the platealid the teeth` the latter being bent up- `wardly:1t-right angles to the plate, as shown,

19. Fig. :20 is a sectional riew` -a have been bent -which rises twothis being the first step in the operation of foldiu'v' the teeth overthe pintles. Figs. 18 to 2() show the-blank'after the final operation offolding has been performed. Here it will be seen that theupstandingendsof'the teeth ,over upo-nf'the pintle and now lie lparallel with theblank and close thereto. l As thus formed the blank is ready to. receivethe hangen'iember which is to be' connected thereto. Y j

Referring now ytothe other figures of the drawing, 2() indicatesjtheframe of the machine, which is madesuicicntlystron to carry the parts,and-from the top plate l of standards` 22` provided at their upper endswith bearin s for a'idriving shaft-23, on onefend of whic isa beltpulley24, and at theother end abeveled gear -vl25,' through which poweris conveyed to -the wire feed mechanism; Slidable in .guides'Q on thestandards 22' is a plunger or head 27 moved vertically in ijts guldes'bya connecting rodl28 pivoted thereto at. one end, and

at its other end to a crank 29 yon the shaft 23.

At or near the lower' cud of the head or plunger 27 projects laterallybeyond the head or plunger, andhas secured on its under side at one endadjustable cutters 31 for forming the teeth orjlu on the blank,'and atits other end a fol ing mechanism 32 for turn- .fallQ- A sprin ,u wardlyfrom adjustable ing the teeth thus formed over the hin epintle.

These two mechanismsy will be escribed more, in detail hereinafter',

Slidable longitudinali in a roove formed inthe `bed-.plate 21, is a lankeeding-bar 33 on` the upper side of which is a plurality of feedingdogs34, which engage the 'blanks and carry them successively to thepunch for cutting teeth', and to the folding mechanism. These dogs 34are each formed of a straight metal late seated in a notch inthe upperside o the feed bai- 33, and held in place by a screw, as shown, theopening in the dog through whichy the screw passes being sufiicientlylarge 'to permit the dog to rise and 35 bea-rs on the under side of eachdog an holds its free edgea short distance aboye;the upper surface ofthefeed bafr33, so as to engage the rear edge of the blank and feed thesame toward the cutting and folding mechanisms, as the feed bar reciprocates, y

J ournaled in bearings fixed to the ,frame at one side is. an "uprightshaft 38 provided at its upper end with a beveled gear wheel 39 engagingwith 'the beveled ear 25 and rotated thereby On the lower en of theshaft ear wheel 40 meshing with a like gear whee 41 rotatable on a shaft42 projecting bearing 43 carried in a hanger 44 vbelow the bed-plate.uOn the shaft 42 is secured a crank 45, which through a connecting rod 46pivoted at its end respectively to the crank and'to the feed frictionplates 47,

at 57, and has projecting bar 33, imparts to the latter the necessaryreciprocating mot-ion to feed the blanks to the machine.

'The blanks are held upon the bed-plate '21 and against the feeding bar33 by a series of which lie above said bar from a oint' about oppositethe shaft 38 to and slig itly beyond the bending mechanism There may betwo or more of these friction plates Vwhich are of inverted U-form,

the legs of which bear on the blanks and are held-against the same bymeans of a swinging lever 48 pivoted in front of the friction plates andadapted to press upon a barV 49 extending longitudinally of the seriesof friction plates and hold the same in place.

A spring 50 `bearsupon the lever 4S, which' held with a yieldingpressure is, therefore, against the bar 49. Vithin each of the frictionplates 47 between the'legs thereof is a supplemental friction plate 51also of inverted U-form, and 'pressed against the blanks by means of aspring 52 which projects through a hole in the friction plate 47 4 andbears against the under surface of the is fixed an angle block 30,'which pressure bar 49. The ,tooth or lug'cutting punch31 hereinabovementioned comprises a block 53 having an elongated slot 54,'throughwhich passes a fastening bolt 55, by means of whichthe punch mayberaised and lowered for adjustment. A bolt 6 screwed into thcoverhanging flange of the angle plate 30 forms a stop for. the punch`tgF prevent it being moved out of position v'when actingA on the blank.The lower endof the punch plate 53 is reduced in thickness as shown fromits forward side a number 'of cutting members 58,which when the punchdescends, in connection with a die 59, out away the metal of the blankto form the teeth or-lugs on the edge thereof in the manner shown in`Fig. 15. Side plates projecting from the angle plate 30 bear against thesides of the punch block4 llB 31, and hold `the latter against anylateral i movement or swinging about the bolt Referring new to thebending mechjanism4 32,61'and 62 are two cheek plates a'paced apart andsecured to the under side oflthe angleplate 30, between which cheekplates are two vertically sliding members, a block 63 by which the teethor lugs are first bent upwardly, and a wire stop two members are held inplace by a plate 65'bearing on their front side, fastened at its ends tothe cheek plates 61, 62. This plate 64. These plate holds said membersfrictionally; against A the angle late so that `it moves t erewith asthe head 27 is raised and lowered. `The lower end of the block 63 isprovided with a plurality of slots 66, which divide said end -into anumber of dents or'serrations 67, which have a downwardly inclinedforward edge, and a horizontal lower edge 68. Prol jecting from thebott-om ofeach dent G7 at its rear yedge is a tooth 69 having aninclined forward'face' 70 as shown. These Iteeth 69 .when the block G3is lowered enter slots'7linl the bedfplate 2l or a-bearing 'block 72.secured thereon; ln front of -each ftooth and spaced from the base orwidest portion thereof,a distance equal to the-diameterof t-he pintlewire -is a vertically sliding pin 73 which extends up into the block,and is provided with a head slidable vertically ina bore 74, formedtherein and held yieldingly in its `lowermost posi-4 tion by a spring 75in said bore held under tension by means Aof a cross.' pin 76, which yextends laterally through the block, and

aboveeach of the springs 75 that act on the severalfpins 73.` Theprojecting portions 77 yof the bed-plate 2l or the hearing 72 betweenthe groove 71 are made a little higher or extend a short distance abovethe plane of'thebed plate and feeding slide 33, and upon these elevatedportions the teeth or lugsa of the bla-nk rest when the latter is inposition to be operated upon by the bendingI mechanism.

Within a recess 78 in the lower portion of theangle plate 30 ispivotally mounted .on a pin 79 a swinging member 80 for giving the finalfold to the fingers ci about the pintle I). This swinging member is madesomewhat'broad at-its upper end and tapers toward its lpwervend, fromwhich projects a plurality'of toes 81 in a forward direction, whichnormally lie closeto the base of the .teeth G9 in line with the spacestherebetween. The backward movement of the member 80-is limited by astop 82 which bearsagainst the top --of the recess 78 while against. thefront of the broad upper edge o #said member, a sliding bolt 83 is vheldi thereagainst bymeansgof a vcoiled spring 8i seatedin a recess in theangleV block 30,

f within which recess the bolt 83 is adapted to slide. v'The extremitiesof the toes 81 of the lmember 80 lic normally in advance of .the pivotpin 79, so that whenthe said membei' is.` lowered these I extremities,coming into contact with the upper faces of the projections 77 ,willswing the member inwardly andforce the .bolt 83 upwardlyto compresstl'iespringcbymeans of which the member is returned to its normalposition when raised.

Immediately bellow the space between the pins73 and the inclined facesojf the teeth 69 there is a substantially semi-circular depression. 85made in the upper surface of the :bed ,21f or `guide-block 72immediately in front of the elevated surfaces of the projections 77'.This depression extends laterally a.- distance equal to, orslghtlyinexcess ofthe length of the pintlc, as shown in Piyotedat one end tothe main frame 20 is a swinging Awire guide 86 normally held,

.elevated by a spring 87 through which guide through the opening 88 Vasufficient distance to form the pintle.

Screwed into the horizontal portion of the` angle plate 30 and'projecting upwardly therefrom, is a rod 90 on which is mounted aresilient cushion Ql'hereshown as a rubber block, but which may ifdesiredbe a coiled spring or other resilient member. Against the bottomofthe rubber cushion 9 1 bears a plate 92 from which depends two ormore` pins `93 slidable through openings Iin the angle plate 30, andbearing at. their lower ends against the top of the block G3..

The vertical'reciprocation of thehead or plunger 27 carries the angleblock 30 with it, and also the bending mechanism 32. On the downwardmovement of the plunger the black 63 descends and the pins 73 andfingersv 69 on its lower end straddle the wire c, which has been fedinto position thereunder,

and should said wire be out of alinementthe .I

inclined forward face 70 of the lingers -will position it by the timethe horizontal -surfaces 68 of the dents 67 have reached the wire. Thewire is now ready to be placed upon the blank a. About the time the'wireis positioned a pin 94 slidable vertically in the cheek olate 61, and-held in downward position by -a spring 95, strikes the upper side ofthe guide 8G and depresses the latter,

which then more in unison with thedescent v of the head (33, carryingthe wire downward toward the blank a.y I,/-Xswthenvire nears the blankthc downward movement yof the wire.

' carrying guide is arrested, but the block 63 continues until finallyit cutting edge 89 passes the opening 88 through which the wire projectsand a length sull?. im 1.1. serve as` a pintle is cut therefrom. Thecontinaed movement of the head 63 forces the pim94,

bearing on the wirecarrying finger 86., to,

slde'into the cheek plate Gl, and compress the spring therein. seated at96, between the pin 73 and thefinger G9, and bears against the undersurfaces against the fingers a and adjacent edges of the blank: a.

the Vdepression 85, forming the crimps a8,

Fig. 16.V The upstandingA corner 97 of the,`

projection. 77, atjthe same time bends the lingers into verticalposition, 'as shown inj Figs. 1G and 17. After this has been'accom- Thepintlevis now '12o `68 of the dents '57LA The pintle also` bears.

Continued downward movenient of the block 6.3 'presses said pint-leiagainst the bla-nk and forces the same. into. 126-y the bottom of theslot 114.

plished 'the block 63 has reached it-s lowestI limitof movement, but thehead or plunger` has yet ashort distance farther to descend.

'During this farther movement the block beplates 98 and 92, the latterbeing prevented` from descending farther as the pins 93bear on the topof the arrested block 63, which holds said pintle firmly withinthe crimpor depression a3 in the blank at. By this time the toes 81 of the member80 have reached the upper surface of the projections 77, and as theplunger27has a :slight distance yet to descend the extremity of thesetoes bearing upon said project-ions are forced to move in a` forwarddirection, swinging the niember 8,0 on its pivot pin 79, and engagingthe upturned lingers a', said toes fold the fingers over thepintle intothe position shown in-Figs. 18 and 20. The head or plunger now rises andthe parts are once more restored to the position shown in Fig.4 4.4

, Fastened to the bed-plate 21, or other poi tion of the frame work, andprojecting therefrom at Athe right side of the machine. as shown in Fig.1, is an upright plate 100, in which is formed a4 horizontal groove 101,which serves as a guide for a carrier 102 of the wire feeding'mechanism,said carrier' having a rib 103 on its rear face which enters saidgroove. Lying against the rear side and top edge of the`plate 100 is anangle bar 104, the horizontal portion 105 of which is frictionallyengaged with a horizontal slot 107 formed'A in the carrier 102 near itsupper edge as clearly shown in Fig. 11. Depending from the horizontalportion 105 of this angle bar` are two arms 106 and 10G,

"to which is fastened the ends of a plate 108 which frictionally engagesthe front of the carrier-102, and holds it in place against the plate100. Behind the plate 100 is a hori- "zontallydisposed bar 109 from oneedge of which project two fingers 110, that are fastened to the angleplate 1011. The other end of the bar 109 is pivoted to an eccentric rod111, on the other end of which is a strap 112 embracing an eccentric 113on the inclined upright` shaft 38.

Longitudinally through the lower portion of the carrier` 1.02 is formeda rectangular opening 114,within which are two wedgeblocks 115, 11G,their inclined edges being in contact. Th'e lower wedge-block 11G isheld against endwise movement by means of a pin 117, which passesthrough a vertical slot' in the wedge so that it may have a freevertical movement, but` cannot move endwise. This wedge-block 116 bearsupon the wire strand c which passes through and rests on e The upperwedge-block 115 is arrangedto bear against 'the top of the slot 114,and` projects at its ends beyond the carrier 102. Threaded hor-izontallyin the arm 106 is a; bolt 118, held against moi/'ement by a jam-nut, theinner end of which bolt is adapted to bear against the wider end of thewedge-block 115, and at suitable times to force said block against itscompanion. block 11G and the latter i .ates as follows: The rotation ofthe shaft 38 turns the eccentric andthe latter reeiprof. cat/es the bar109, which in turn causes the angle plate 1 0-l to move to and frointhebending mechanism 32, said angle plate being frictionally connected withthe carrricr 102; the latter 'moves with the angle plate unlessarrestedv by some means, whereupon the angle plate will moveindependently of the carrier. This arresting means is the pin 121,which, as said parts' move toward the bending mechanism, will aftertraveling a certain' distance, bring the lever 119 into contact with theend of the pin 121, partly arresting the movement of "ie carrierwithout. interfering in the least with the movement of the angle block,thelattercontinuing its movement until it reaches the end of the stroke,which will be only a shortdistance beyond the point where the carrier102 was arrested. 'The carrier does not stop positively, but itsmovement is much slower than that of the angle plate 104, the resultbeing that the lower end of the lever 119 strikes the upper wedge block115, and slides it in a direction to loosen the lower wedge block 116and. free wire strand c, the bolt 118 in the meantime having been movedaway fromA the wider end of the upper wedge block. The lower wedge blockbeing freed from the pressure of the upperx wed e block, the wire isnotgripped, and, there ore, the return movement of the carrier does notgrip the Wire,l which latter remains stationary, the carrier moving backto obtain a new grip thereon. If there be no blanks traveling towardthe' bending mechanism the carrier 102 will vibratei back'and forth withthe wedge blocks loose so that no Wire will be fed, but if a blank isapproaching the bending mechanism, the advancing edge of the latter willoperate a controllin mechanism and cause the wedges to grip t e wire.

The controlling mechanism above noted, comprises a swinging arm 125ivoted to a bracket projecting up rom the ed-plate 21 and hangingdownwar lyat an angle in the .direction vof movement of the blank, thefree endof said arm being curved., as shown at 126 with its extremity'127 pointed in an upward direction. Normally the curved portion 126 ofthe arm rests in a depression 128 in the bed-plate, but as the blank aisfedto the bending4 mechanism its forward edge engages the arm.,125, and'elevates it from the depression'128,"as shown in Fig. 9. Thisvincw'einentof vthe arm 125 causes its free end 127 tovvlift a pin 129on one end of a rocking Y ther movement. vThe angle' plate 104, however,continues its movement, thus bringing the bolt 118 against the wider endof the wedgeblock 115, and pushesthe same in a direction to cause thelower,v wedge'block 116 to bear forcibly -upon the Wire strand e, thusclamping it firmly in the carrier 102.l This same movement of thewedge'block 115 rocks the lever 119 againstthe lower end of v'which thewedge blcck'bears Aandv swings 'its upper end in position to strike thepin 121 on the next movement of thecarrier toward the bending mechanismfor the purpose of releasing the wedges from the wire arid obtaininga.new grip thereon. This operation'conti dues as long as blanks are beingfed to the machine. Should there be anyinterruption in the feeding ofblanks to 'the bending mechanism, the controlling device will reinainout of action, thus preventing, the wire feed mechanism gripping and.advancing the wire strand to the bending mechanism when no blanks are inposition thereunder.

A table'135 is provided at the feeding end' of the machine uponwhich islpivl'ed'a stacky of blanks a, so as to beconvenient tothe operator, whoplaces them Aone at a time upon .thefeed bar 33, which hasa'lip 136 onits end to' engage the vrearedge ofthe blank and. feed'the same forwardfor the rst step inthe intermittent feeding move,- ment to the bendingmechanism. The blanks travel to the bending mechanism between a fixedupright plate 137 at its rear edge, and an adjustable upright plate 138to guide its forward edge, this plate 13S having attached on its innerface a long hat-'spring plate 139 against which the edges of the blanksbear, and bygwhich they are -held against the rear plate 137, throughthe medium of springs'14( y l Before the Wire strandenters' the feedingmechanism it passes between 'a series of e path of retreating move-Astaggered straightening` rollers 141, whereby all irregularities in thewire are re'- l moved, and the latter is fed to the carrier 102 in aperfectly straight condition.

The general operation of the machine is as follows: Power being appliedto the pulley 124, the main shaft rotates continuously, and through -theproper connections hereinabove described, the head or plunger 27reciprocates in its guide 26 and the wire feeding mechanism travels toand from the bending mechanism without feeding the wire. When, however,the lblanks are placed 'upon the feed bar they are carriedintermittently -toward the bending mechanism, irst passing below thepunch 31, to have the teeth a. cut in one edge thereof,` and thence tothe bending mechanism. As, each blank passes to the bending mecha- `nismit operates the controlling` device by first lifting the swinging arm125 to rock the lever 130 which in turn depresses the lever 132 'tobring its hooked end 134 into yposition to stop the outward travel ofthe carrier 102. The blank coming to rest be` neath the bendingmechanism, the latter moves downwardly'carrying the pin 94 and wire'stop plate 64 with it, bringing said plate in position Jfor the end ofthe wire to strike, and the pin 94 to bear upon the wire guide 85,swinging the same-downward and bringing the projecting end of the wirenear the-blank. The cutting edge 89 of the blockV 63 now seversa pieceof wire sufficiently .lon for a pmtle. which. being guided into"position by the fingers 69 and the sliding pins 73, isvforced againstthe blank and its fingers a", to form the crimp a3 therein and tu'rn thefingers into verticallposition, 'as in Fig. 6. rhe toes 31 of theswinging mein` ber 30 then come into play and fold the up- .standingends of the teeth a over the pintle b, as shown in Fig'. 7, after whichthe Vbending mechanism is raised` ,thejfinished blank removed frombeneath the same, and ai new blank introduced thereunder, the finishedblank dropping from the bed-plate 21 onto a table 142. 'y s y' Whenblanks have the teeth or lugs a eut intheiiedg'es before being fed tothe' machine, areto be operated upon, the c'ut-` ting punch' 31 visomitted, and the controlling mechanism slightlv changed, as' shown inFigs'12 and 13'. Here the blanks a are fed transversely tothe machineimmediately in front ofthe bending mechanism The swinging arm 125 inthis caseis pivoted' to the bracket 122 land lies' in a direction atright angles to that shown in the preferred form,'so that as the blanksare fed Vto the may lift the pin 129 ofa lei/M1311?, on the youter endof -`wliicliis a hook 1345. similar to the hook 134 on the lever 132 andfor a bending mechanism this-swinging .arm 125. vwill be raised in orderthat its free end 127 over said blanks, means for cutting partly foldsaid like purpose. Here a flat` spring 133 is used to hold the lever 130in its inoperative position with relation to the carrier 10i, as

rated edges, and pintles to said mecl'ianism for folding said serrationsaround the pintles, and means positively controlled by, the advancingblank for causing said pintle feeding means to become operative.

2. In a machine of the character described, means for consecutivelyfeeding blanks having a serrated edge into' said machine, means forintermittently feedinga strand of Wire `above the serrations, meanslengths from' said Wire strand to' form pintles, and a bending mechanismfor folding` said serrations around the pintles.

In a machine of the character described, means for feeding blanks havingteeth or lugs on one Aedge into said machine, means normally out ofoperation for feeding Wire` pintles above said teeth, means for foldinglsaid teeth around said pintles, and means controlled by the blankadvancing to the' folding means for causing said pintle feeding means tobecome operative.

- 4. In a machine of the character described, means for consecutivelyfeeding blanks have ing a serrated edge into said machine, means forintermittently feeding a strand of Wire lengths from said Wire strand toform pintles and pressing the same upon the blank to crimp and partlyfold said serrations around the pintles, and means for completing thefolding of said serrations. l

. 5. In a machine of the character' described, means for consecutivelyfeeding blanks having teeth on one edge into said machine, means forfeeding a strand of wire above the teeth of said blanks, means forcutting said Wire into lengths to form pintles, means for pressing saidpin'tles upon the blanks and teeth to crimp the same and teeth `aroundthe pintles, means for completing the folding oflsaid teeth, and meansactuated by the advancing blank for causing the Wire feed mechanism toclamp and feed thezwire strand.

6. In a machine oflthe character described, means for feeding blankshaving a serrated edge into said machine, of operation for feeding a.strandl of ivire above said serrated edges, means for cutting said Wirestrand into lengths vto form pintles, means for pressing a pintleagainst the blank to crimp the same and the serrations, meansI forfolding said serrations around said pintle, and means controlled by theadvancing blank for causing vsaid pintle feeding means to becomeoperative.

for cutting means norm ally out 7 .-In a machine of the characterdescribed, means for consecutively said machine, means for forming teethor lugs on one .edge of said blanks, means for intermittently feeding astrand of wire above the teeth or lugs, means for cutting lengths fromsaid wire strandto form pintles, and meansfor :folding said teeth aroundthe pintles.

S. Ina machine ofthe character described,

means for consecutively feeding blanks into forming teethor lugs on 'oneedge of each of saidv blanks,I

said machine, means for `means for, feeding wire pintl'esabovesaid saidpintles,-and means controlled by the blank advancing lto the foldinglmechanism for causing said pintle feeding Ameans to become operative. l

`9. In a machine of the character'described, means for consecutively.feeding blanks into said machine, means for cutting teeth on one `edgeof cach of` said blanks, means over said blanks, means for cuttinglengths from-said Wire strand to form pintlcs and pressing the same uponl and partly -fold said t'eetlr around the pintles, and means f orcompleting the folding of said teeth.

10. In a machine of the character described, means for consecutivelyfeeding blanks into 'said' machine, means for `cutting teeth on one'edgeof each of said lgplanks, means for feeding a strand of wire above theteeth to said blanks, means for cutting said Wire into lengthsforpressing said4 pintles upon the blank and teeth to. crimp the sameand partly fold said teeth around the p'intles, means for completing thefolding of sa-id teeth, and means'actuated by the blank advancing tovthe bending mechanism for causing the Wire feed mechanism to clamp andfeed the Wire strand. f A j 11. In ainachine of the character described,means for feeding blanks into'said machine, means for cutting teeth inone edge ofxeach of said blanks, means for feeding a strand of wireabove Vsaid teeth, means for cutting said wire strand into lengths toform pint-les, means fora pressing saidV pintles against the blanks tocrimp the same and the teeth and turn said teeth atlright angles to theblank, means for completing the folding of'said teeth around saidpintles, and means 1 scribed,"means for feeding thereinto blanks l lhaving teeth or lugs on one edge, means for feeding pintles above saidteeth, and successively operating means for folding said teeth aroundsaid pintles.

feeding blanks intoA teeth, means' for foldingsaid teeth around' for`uninterruptedly feeding la strand of Wire l controlled by the blankadvancing to the? thev blanks to crimp to form pintles, means n' blanksthereinto, means for forming teeth or lugs on one edge of said blanks,means for feeding pintles above said teeth, and successivelyoperatingmeans for folding said teeth around said pintles. A

114.1In a machine of the character described, meansfor consecutively.feeding thereinto blanks having 'teeth or lugs on one edge, means forfeeding a strand of wire above. said teeth, 'and a vibrating bendingmechanism provided with means for cutting lengths from said strand ofivire to form pintles andfoldingsaidteet'h around saidwpintles. i 'l 15.In a machine of the character ldescribed, means .for consecutivelyfeeding blanks thereinto means for feeding a strand of.l wire4 above theblank, a reciprocating plunger provided With a cutter for forming teethory lugs on one edgeof said blank, mechanism`v for 4cutting lengths fromsaid Wire to form pintles and folding said teeth for. lugsaroundsaidpintles, and means controlled by the advancing blanks forrendering the Wire feeding mechanism operative. f 16.111. a machineofthe character described, the combination of blank feedingvsomechanism, a cutter for forming teeth er lugs 0none edge'lof saidblank, mechanism for 4feeding Wire to the teeth to form pintles,

' a reciprocatingr plungerfor partly folding theteeth about the pintles,.and a seco-nd folding member pivotedl on the plunger for :completingthe folding of the fingers.

l7. In a, machine of the character described,` the combination of blankfeeding .,mechanism, al'rcutter for forming teeth or lugs on one edge ofsaid blank, mechanism for .feeding Wire'to the teeth to form pintles, Y

a support 'for' the toothed edge ofthe blank vprovided with adepressionbelow the teeth thereof, a reciprocating plunger. for pressing thepintle upon the teeth vand adjacent portions ofthe blank vto ,crimp thesame and partly.; folding the teeth about the pintles,

' Aandl a second folding member pivoted on the plunger for:completingfthe folding of the gers;I ,y '18.. In a. machine. nfl-thecharacter des scribed, the combinationof blank feeding mechanism, acutter for forming teeth or l lugs-on one edge of said blauk,fmech'anismfor .feeding Wire lto the teeth toiform pintles'," 'a'support forl thetoothed 'edge of the blank the teeth thereof, and elevated portions onwhich the' teeth rest, a reciprocating pluri er having,

providedwith adepression b elog depending guide fingers and pins fordirecting the pintles into position to be pressed -against the blank tocrimp the same and the fingers and partly Ifold said fingers aroundthepintles, and a second folding rmember y if? folding of the lingers.

'19. In a machine .of the character` de' scribed, having a blank feedingmeans'and a pintle feeding means, combined Withablanki l' support havinga depression .tliereinand elevated portions' in rearof said depressionupon which teeth on the blank rest, a re'- i ciprocating plunger forpressing said pintle upon the 'teeth and adjacent portions of the blankto' press said parts into the depression and crimp the same and .topartly foldthe teeth around the pintle, and a second folding memberpivoted to the plungerfor 'completing the foldingv of the fingers, i j20. ln a. .machine of the4 `character described, having blankfeedingmeans an@ a pintle feeding means, combined Within blank supporthaving a depression therein and elevated portions in rear of saiddepression upon which teeth on the blank rest, a reciprocating plungerfor pressing saidpintlc upon .the teeth 4and adjacent portions of theblank to press said parts intotlie depres sion and vcrimp the same andto partly fold.

said depression.y p p 2l. In a' machine offthe character de# scribed,the. combination of a blank feeding ing and. holding the pintle inposition above..

means, a Wire strand feeding mechanismA normally disconnected .from theWire strand,A

and means controlled by Jthe advancing blanks for causing saidwirefeeding mechanism to clamp and feed the Wire.

92. ln a machine of the'character; de-

scribed, the combination .of a blank ,feeding means,` Wire strandfeeding mechanism` a swinging lever adapted to be raised by an advancingblank, and connections between 'normaliv disconnected from Athe Wirestrand,-

said lever and the Wire feeding mechanism for causing the lattertoclainp and feed the Wire.

scribed, the combination of a blank feeding mechanism, pint-le feeding.mechanisnn mechanism for folding the blank around 23.111 a machine ofthe character de?` iis;

said. pintle, and means wholly controlled by the blank advancing to thefolding mecha` nism for causing said nism to feed p-intleto the blank.

24. ln a machine ofl the charactemdepintle` feeding mechasJ scribed, thecombination of a blank feeding mechanism, pintle, feeding mechanism, a..

punch for cutting teeth on one edge of said blank, mechanism for foldingsaid'wteeth around said pintle, and means Wholly controlled by the blankadvancing to the folding mechanism for causing said pintle feed-v ingmechanism to feed a pintle tot-he blank.

i va ted portions 2.5."In a machine of the characterdescribed. a blanksu ortiner bed hav-ino' elevated portions for supporting teeth or lugson one edge of said blank and a depression at the base of said elevatedportions, means for pressing a pintle on said teeth and adjacent partsof the blank and into said de-A pression to crimp the same and partlyfold the lteeth about the pintle,l said pressing means having dependingguide lingers and pins for holding said pintle in proper relation tosaid teeth, andmeans for completing thefolding of the teeth. y

27. In a machine of i scribed, a blank supporting bed having elevatedportions for supporting teeth or lugs on one edge of said blank and adepression at the base of said elevated portions, means for feeding awire strand through a movable guide to said teeth, means for` depressingsaid guide and cutting a length of wire therefrom to form a pintle,means for pressing said teeth and adjacent parts of the blank into saidde ression. to crimp the same and partly fold t e teeth about-the'pintle,

said pressing means having depending guide fingers and pins for holdingsaid pintle in proper relation to said teeth, and meansfor completingthe folding of the teeth.

l 2,8. In a machine of the character' dcscribed, bending mechanism forfoldinfr teeth or lugs on a blank about a pintle, said binding meanscomprising a blank supporting bed 'havinga depression therein, a.movable head having a slotted lower vend for pressing a pintle on saidteeth and the latter intothe depression in the bed to crimp said teethand partly fold the same, and a swinging member'carried by the movablehead to engage the partly folded teeth and complete the foldingofthesame.

29. In a machine of ,the character described, bending mechanism forfolding teeth or lugs on a blank about a pintle, said bending mechanismcomprising a blank sup- `porting bed having a depression therein, a

movable head having a slotted lower end for pressing a pintle on' saidteeth and the latter intoa depression in the bed to crimp sai teeth andpartly fold the same, fixed depending guide fingers on said movablehead, and

' "guide .pins telescoping into said head for maintaining said pintle inproper relation to theteeth, and a swinging member carried by saidmovable head havingI forwardly projecting toes which Contact with th"supfor suliportmg teeth or lugs the character deporting bed and aremoved thereby to complete the' folding of the teeth around the pintle. l

30.In a machine of the character described, 'bending mechanism forfolding a blank around a pintle, means for successively feeding blanksto the bending mecha- 4 nism, means for feeding pintles to the bendingmechanism above the blank, means for causing said pintlefeeding meansnormally out of operation to become operative, and means in the path ofand controlled by the blank advancing to the bending mechanism foractuating the means by which the pintle feed is made operative.

31. In a machine of the .character described, mechanism for feedingblanks thereinto, means for feeding a strand of Wire above said blank,said means being normally inoperative, means for cutting 'a pintle fromsaid Wire strand, means for folding said blank about said pintle, a stopmovable into the path of the Wire feeding means to cause the, same toclamp'the wire for feeding it, means controlled by the blank advancingto the bending mechanism for moving said stop into the path of the Wirefeedin means, and .means for releasing said wire a ter feeding a lengthsufficient for a pintle. l

32.1'11 a machine of the character described, means for feeding a strandof Wire thereto' to form pintles, said means comprising a holder, aWire' clamping device carried thereby, means positively reciprocatedupon which said holder is frictionally supported and by means of whichit is moved,` positively reciprocated means` a stop on the for operatingthe Wire clamping device to grip the wire, means on the holder fordisconnecting said'wire clampin device, and.;l stop movable into thepath o? travel of said holder to arrest the same and permit thepositively reciprocating means to actuate the wire gripping device.

33. In a `machine of the character described, means for feeding blankssuccessively thereinto, means for feeding a stran of Wire to the blanksto form pinhcs, sai

Wire feeding means comprising a holder,

Wire clamping device carried thereby, melm positively reciprocated uponwhen said holder is frictionally supported and by means of which it ismoved, a stop on the positively reciprocated means for o erating theWire clamping device to grip t e wire, means on the holder fordisconnecting said Wire clamping device, a stop movable into the path oftravel of said holder t-o arrest the same and permit thepositivelyvreciproeating means to actuate the Wire gripping device, andmeans cont-rolled by the advanc- 34. In amachine of the character dciiiscribed, means for feeding a strand ofiwire theretoto form pintles,comprising means positively1 and constantly recipioclitcd, a holderfrictionally mounted upon said reciprocating means and movable thereby,Wil-e clamping Wedges carried by said holder.h means on saidreciprocating means for actuating said Wedges to grip and advance theWire, means carried by the holder contacting with a fixed part Qfthe-machine to release the grip of the Wedges on the wire :it the end ofeach feeding reciprocation, and a stop

